Image Thumbnails

Thumbnails are miniature versions of an image you've made available on your
site. In most cases, they're used in image galleries as a means of making
the page load more quickly as smaller image files do not take as long to
load. The idea of the image gallery is that your viewers click the images
in which they are interested to see the larger versions. If you decide to
build an image gallery in your site, need to create an image thumbnail for
another reason, or just need to resize an image (file size and all), you can use
your site's built-in thumbnail creation tool to do the job. To create an
image thumbnail or resize an image:

You're presented with a list of files that you've uploaded to your
site. Click the file you want to resize or turn into a thumbnail.

In the toolbar above the image preview, click the Create
Thumbnail button to the far right.

The preview is replaced by the Create Thumbnail screen
asking for details about your new image. A suggested file name appears
in the New Image Name field. If you're satisfied with
this name, continue filling out the details of your thumbnail (or resized)
image. If not, type in a new file name for your scaled image. Keep
in mind that if you're resizing an existing image, you can either create a new
file sized to fit your specifications or you can overwrite the existing file
in your File Library by changing the file name to the same name as the
original file.

Decide whether you want to scale your image by percent of its current size
or by its pixel width and height. Once you've decided, choose the
appropriate option from the Dimension Unit drop-down menu.

If you want to ensure that you do not stretch or skew the image so that it
appears distorted, check the Constrain Proportions box.

If you want to ensure that any existing file with the file name you
specified earlier are overwritten by the new file, check the Overwrite
if File with Such Name Exists box.

Finally, type the width and/or height to which you wish to scale the
image. As you do this, keep in mind whether you're scaling by percentage
or by pixel width/height.

When finished, click Create to create the image.

The scaled image or thumbnail is automatically added to your File
Library. At this point, since the Image Manager remains open, you can
continue to insert the new scaled image into your page or continue creating
thumbnails as you see fit.